Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

I can't tell exactly which could be causing these issues as I updated my flash to 10.1 and my NVIDIA drivers to the latest 257.21 (upgrading from 197.45) at the same time, but I am now (coincidentally?) seeing the two following issues:

1) When playing embedded flash videos in web pages, there is sometimes a green/garbled area on parts of the screen that I never noticed before

I'd start by rolling back the video driver and simply rerunning what your were when you experienced the issue, if it goes away you have your answer and a simple fix, if not I'd see if there are posts discussing the 10.1 flash and how folks are dealing with it.

I also share the same issues but it is a bit different. When I tick enabled hardware acceleration, the video turns green and an error message pops up which says that display driver has stopped working and has recovered.

When I untick the hardware acceleration on flash, I get no errors. I also have the latest NVIDIA drivers installed as well. This problem has been bugging me since I updated Flash to 10.1!

latest firefox and/or adobe flash = garbage so how can I go back tomy previous version?
have NEVER had these issues watching online vids using firefox until the past few days. Now I am getting routine aadobe flash crashes on youtube, the only place I watch much video. I have 20 mbps downloads so speed is not the issue.
How can I roll back the version of...